YARA · Malpedia signator rules
MALPEDIA_Elf_Mirai_Auto
autogenerated rule brought to you by yara-signator
- Author
- Felix Bilstein - yara-signator at cocacoding dot com
- Date
- 2026-05-04
- Modified
- 2026-05-18
- Score / Quality
- 75 / 75
What this rule detects
autogenerated rule brought to you by yara-signator
Associated malware family: Mirai.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
elf-mirai-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Elf_Mirai_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "dfd324ab-3884-55bd-a95c-3bb92553cda0"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/elf.mirai"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/elf.mirai_auto.yar#L1-L111"
= "N/A"
= "e2e7693ad9a3cb1569f8d0c25c2d84e001f8490aebf2a17804ba9c0f26975142"
= 75
= 75
= "FILE"
= "1"
= "yara-signator v0.6.0"
= "callsandjumps;datarefs;binvalue"
= "20260422"
= "a182e35da64e6d71cb55f125c4d4225196523f14"
= "20260504"
= "CC BY-SA 4.0"
= "TLP:WHITE"
strings:
$sequence_0 = { e9???????? e8???????? 66894314 e9???????? }
$sequence_1 = { 66c1e808 d0e8 8d04c0 28c2 }
$sequence_2 = { c1ea03 89d0 c1e005 01d0 89ca }
$sequence_3 = { c1e005 01d0 89ca 29c2 }
$sequence_4 = { 807c242b00 66894304 7406 66c743064000 c643092f }
$sequence_5 = { c7433400000000 894330 c6433801 c6433903 }
$sequence_6 = { c1ea03 89d0 c1e005 01d0 89ca 29c2 }
$sequence_7 = { 66c1c808 807c242b00 66894304 7406 66c743064000 c643092f }
$sequence_8 = { 894330 c6433801 c6433903 c6433a03 c6433b06 }
$sequence_9 = { 6689432a e8???????? c7433400000000 894330 }
condition:
7 of them and filesize < 2228224
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { e9???????? e8???????? 66894314 e9???????? } | |
| $sequence_1 | hex | { 66c1e808 d0e8 8d04c0 28c2 } | |
| $sequence_2 | hex | { c1ea03 89d0 c1e005 01d0 89ca } | |
| $sequence_3 | hex | { c1e005 01d0 89ca 29c2 } | |
| $sequence_4 | hex | { 807c242b00 66894304 7406 66c743064000 c643092f } | |
| $sequence_5 | hex | { c7433400000000 894330 c6433801 c6433903 } | |
| $sequence_6 | hex | { c1ea03 89d0 c1e005 01d0 89ca 29c2 } | |
| $sequence_7 | hex | { 66c1c808 807c242b00 66894304 7406 66c743064000 c643092f } | |
| $sequence_8 | hex | { 894330 c6433801 c6433903 c6433a03 c6433b06 } | |
| $sequence_9 | hex | { 6689432a e8???????? c7433400000000 894330 } |
Condition
7 of them and filesize < 2228224In plain words (Heuristic)
- The file must be smaller than 2228224 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
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Licence & attribution
Author: Felix Bilstein - yara-signator at cocacoding dot com
Source repository: Malpedia signator rules @ c901f97b7d
Licence: Creative Commons Attribution-ShareAlike 4.0 (repository licence)
Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.
Rule id: dfd324ab-3884-55bd-a95c-3bb92553cda0
Metadata
| version | 1 |
|---|---|
| tool | yara-signator v0.6.0 |
| signator_config | callsandjumps;datarefs;binvalue |
| malpedia_rule_date | 20260422 |
| malpedia_hash | a182e35da64e6d71cb55f125c4d4225196523f14 |
| malpedia_version | 20260504 |
| malpedia_license | CC BY-SA 4.0 |
| malpedia_sharing | TLP:WHITE |
Tags:FILE
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